'''Edward J. Ruppelt''' (July 17, 1923 – September 15, 1960) was a United States Air Force
officer probably best known for his involvement in Project Blue Book
, a formal governmental study of unidentified flying objects
. He is generally credited with coining the term "unidentified flying object", to replace the terms "flying saucer
" and "flying disk" - which had become widely known - because the military thought them to be "misleading when applied to objects of every conceivable shape and performance. For this reason the military prefers the more general, if less colorful, name: unidentified flying objects. UFO (pronounced Yoo-foe) for short."
[Ruppelt, 1956, p. 18 f.]
Ruppelt was the director of Project Grudge
from late 1951 until it became Project Blue Book
in March 1952; he remained with Blue Book until late 1953. UFO
researcher Jerome Clark
writes, "Most observers of Blue Book agree that the Ruppelt years...